JP2009516998A - 非同期型発電機のための対称および非対称故障に対する保護およびコントロールのためのシステム - Google Patents
非同期型発電機のための対称および非対称故障に対する保護およびコントロールのためのシステム Download PDFInfo
- Publication number
- JP2009516998A JP2009516998A JP2008541767A JP2008541767A JP2009516998A JP 2009516998 A JP2009516998 A JP 2009516998A JP 2008541767 A JP2008541767 A JP 2008541767A JP 2008541767 A JP2008541767 A JP 2008541767A JP 2009516998 A JP2009516998 A JP 2009516998A
- Authority
- JP
- Japan
- Prior art keywords
- control
- current
- symmetric
- case
- faults
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005284 excitation Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000001052 transient effect Effects 0.000 claims description 8
- 230000002441 reversible effect Effects 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000013598 vector Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 241000219793 Trifolium Species 0.000 description 1
- 101100524346 Xenopus laevis req-a gene Proteins 0.000 description 1
- 101100524347 Xenopus laevis req-b gene Proteins 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/102—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for limiting effects of transients
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
- F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/007—Control circuits for doubly fed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/105—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for increasing the stability
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/337—Electrical grid status parameters, e.g. voltage, frequency or power demand
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200502844A ES2296483B1 (es) | 2005-11-21 | 2005-11-21 | Un sistema de control y proteccion ante faltas simetricas y asimetricas, para generadores de tipo asincrono. |
PCT/ES2006/000254 WO2007057480A1 (es) | 2005-11-21 | 2006-05-17 | Un sistema de control y protección ante faltas simétricas y asimétricas, para generadores de tipo asíncrono |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2009516998A true JP2009516998A (ja) | 2009-04-23 |
Family
ID=38048314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008541767A Pending JP2009516998A (ja) | 2005-11-21 | 2006-05-17 | 非同期型発電機のための対称および非対称故障に対する保護およびコントロールのためのシステム |
Country Status (9)
Country | Link |
---|---|
US (1) | US7939954B2 (es) |
EP (1) | EP1965075B1 (es) |
JP (1) | JP2009516998A (es) |
AU (1) | AU2006314464B2 (es) |
CA (1) | CA2630232C (es) |
DK (1) | DK1965075T3 (es) |
ES (2) | ES2296483B1 (es) |
TR (1) | TR201903221T4 (es) |
WO (1) | WO2007057480A1 (es) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006054870A1 (de) | 2006-11-20 | 2008-06-12 | Repower Systems Ag | Windenergieanlage mit Gegensystemregelung und Betriebsverfahren |
US7977925B2 (en) * | 2008-04-04 | 2011-07-12 | General Electric Company | Systems and methods involving starting variable speed generators |
GB0810400D0 (en) * | 2008-06-09 | 2008-07-09 | Rolls Royce Plc | A synchronous electrical machine |
WO2010045964A1 (en) * | 2008-10-20 | 2010-04-29 | Woodward Seg Gmbh & Co. Kg | Protection system of a doubly-fed induction machine |
DE102008037566A1 (de) * | 2008-11-19 | 2010-05-27 | Woodward Seg Gmbh & Co. Kg | Vorrichtung zur Regelung einer doppelt gespeisten Asynchronmaschine |
WO2010079234A1 (en) * | 2009-01-12 | 2010-07-15 | Vestas Wind Systems A/S | Reconfigurable power converter module |
EP2378656B1 (en) * | 2009-01-14 | 2018-04-04 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Protection circuit used in wind power generation system including double-fed induction generator |
WO2010083846A1 (de) * | 2009-01-20 | 2010-07-29 | Powerwind Gmbh | Verfahren und schaltungsanordnung zur speisung eines mehrphasigen elektrischen netzes |
WO2010088928A1 (de) * | 2009-02-09 | 2010-08-12 | Powerwind Gmbh | Verfahren zur speisung eines mehrphasigen elektrischen netzes und zugehörige schaltungsanordnung |
CH701746A2 (de) | 2009-09-03 | 2011-03-15 | Ids Holding Ag | Generatorsystem mit direkt netzgekoppeltem Generator und Verfahren zum Durchfahren von Netzstörungen. |
CH701753A1 (de) * | 2009-09-03 | 2011-03-15 | Ids Holding Ag | Generatorsystem mit direkt netzgekoppeltem Generator und Verfahren zum Durchfahren von Netzstörungen. |
WO2011045263A1 (en) * | 2009-10-12 | 2011-04-21 | Vestas Wind Systems A/S | Damping of drive train oscillations by dc-link absorption means |
US9478987B2 (en) * | 2009-11-10 | 2016-10-25 | Siemens Aktiengesellschaft | Power oscillation damping employing a full or partial conversion wind turbine |
EP2566042B2 (en) | 2010-04-29 | 2017-05-03 | Ingeteam Power Technology, S.A. | System and method to control a electrical generator |
US20130147194A1 (en) | 2010-06-14 | 2013-06-13 | Ingeteam Power Technology, S.A. | Electricity generation system that withstands voltage dips |
EP2621071A4 (en) * | 2010-09-22 | 2017-05-17 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Power conversion device |
US8141416B2 (en) * | 2010-09-30 | 2012-03-27 | General Electric Company | Systems and methods for identifying wind turbine performance inefficiency |
EP2463976A1 (en) | 2010-12-08 | 2012-06-13 | Siemens Aktiengesellschaft | Circuit and method for regulating a DC voltage and power con-verter |
US8570003B2 (en) | 2011-04-13 | 2013-10-29 | Rockwell Automation Technologies, Inc. | Double fed induction generator converter and method for suppressing transient in deactivation of crowbar circuit for grid fault ridethrough |
US9041234B2 (en) | 2012-03-26 | 2015-05-26 | Rockwell Automation Technologies, Inc. | Double fed induction generator (DFIG) converter and method for improved grid fault ridethrough |
EP2662561A1 (en) * | 2012-05-09 | 2013-11-13 | Siemens Aktiengesellschaft | Method and arrangement for damping a shaft oscillation |
DK2672624T3 (en) * | 2012-06-05 | 2014-12-01 | Siemens Ag | Power regulator and generator system |
CN103066622B (zh) * | 2012-12-28 | 2015-06-24 | 东方电气集团东方汽轮机有限公司 | 一种新型双馈风力发电机组及其运行方式 |
US9941687B2 (en) | 2013-06-04 | 2018-04-10 | General Electric Company | Methods for operating wind turbine system having dynamic brake |
US8975768B2 (en) | 2013-06-05 | 2015-03-10 | General Electic Company | Methods for operating wind turbine system having dynamic brake |
US9231509B2 (en) | 2013-11-25 | 2016-01-05 | General Electric Company | System and method for operating a power generation system within a power storage/discharge mode or a dynamic brake mode |
EP3084907B1 (en) | 2013-12-18 | 2023-06-07 | Ingeteam Power Technology, S.A. | Variable impedance device for a wind turbine |
US9337685B2 (en) | 2013-12-23 | 2016-05-10 | General Electric Company | Optimized filter for battery energy storage on alternate energy systems |
US9467081B2 (en) * | 2014-09-29 | 2016-10-11 | Ingeteam Power Technology, S.A. | Protection system for a power converter connected to a doubly fed induction generator |
EP3447891A1 (en) * | 2016-04-19 | 2019-02-27 | Ingeteam Power Technology, S.A. | Filtering method for the ac side of a power conversion system and power conversion system |
US9847733B2 (en) | 2016-05-12 | 2017-12-19 | Rockwell Automation Technologies, Inc. | Power conversion system with DC bus regulation for abnormal grid condition ride through |
CN106329577B (zh) * | 2016-09-05 | 2019-02-12 | 易事特集团股份有限公司 | 无刷双馈电机的并网控制*** |
CN110080944B (zh) * | 2018-01-26 | 2021-09-24 | 通用电气公司 | 风力发电***及其控制方法 |
CN117578596B (zh) * | 2024-01-16 | 2024-03-29 | 湖南大学 | 一种直驱永磁风力发电机组连续故障穿越控制方法及*** |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US116476A (en) * | 1871-06-27 | Improvement in street-lamps | ||
US237678A (en) * | 1881-02-15 | Grain-separator | ||
US4812729A (en) * | 1986-08-19 | 1989-03-14 | Hitachi Ltd. | Protecting apparatus for secondary excitation type variable speed AC generator/motor |
JP3100805B2 (ja) * | 1993-08-24 | 2000-10-23 | 東京電力株式会社 | 可変速揚水発電システムの過電圧保護装置 |
BR0209005A (pt) * | 2001-04-20 | 2004-08-10 | Aloys Wobben | Processo para a operação de uma instalação de energia eólica, e, instalação de energia eólica |
JP2005516577A (ja) | 2002-01-29 | 2005-06-02 | ヴェスタス,ウィンド,システムズ エー/エス | 風力エネルギーの設備に使用するための回路装置 |
US6921985B2 (en) | 2003-01-24 | 2005-07-26 | General Electric Company | Low voltage ride through for wind turbine generators |
US7332827B2 (en) * | 2003-02-07 | 2008-02-19 | Vestas Wind Systems A/S | Method for controlling a power-grid connected wind turbine generator during grid faults and apparatus for implementing said method |
FI116174B (fi) | 2003-04-08 | 2005-09-30 | Abb Oy | Kokoonpano ja menetelmä suuntaajavälineiden suojaamiseksi |
CA2518074C (en) * | 2003-05-02 | 2011-07-26 | Xantrex Technology Inc. | Control system for doubly fed induction generator |
US7233129B2 (en) * | 2003-05-07 | 2007-06-19 | Clipper Windpower Technology, Inc. | Generator with utility fault ride-through capability |
EP1499009B1 (en) * | 2003-07-15 | 2007-10-31 | Gamesa Innovation & Technology, S.L. Unipersonal | Control and protection of a doubly-fed induction generator system |
ES2416288T3 (es) * | 2005-08-12 | 2013-07-31 | General Electric Company | Turbina eólica de protección contra sobrevoltajes |
US7423412B2 (en) * | 2006-01-31 | 2008-09-09 | General Electric Company | Method, apparatus and computer program product for injecting current |
US7425771B2 (en) * | 2006-03-17 | 2008-09-16 | Ingeteam S.A. | Variable speed wind turbine having an exciter machine and a power converter not connected to the grid |
US7622815B2 (en) * | 2006-12-29 | 2009-11-24 | Ingeteam Energy, S.A. | Low voltage ride through system for a variable speed wind turbine having an exciter machine and a power converter not connected to the grid |
US7709972B2 (en) * | 2007-08-30 | 2010-05-04 | Mitsubishi Heavy Industries, Ltd. | Wind turbine system for satisfying low-voltage ride through requirement |
-
2005
- 2005-11-21 ES ES200502844A patent/ES2296483B1/es not_active Expired - Fee Related
-
2006
- 2006-05-17 ES ES06755341T patent/ES2704407T3/es active Active
- 2006-05-17 US US12/085,194 patent/US7939954B2/en active Active
- 2006-05-17 WO PCT/ES2006/000254 patent/WO2007057480A1/es active Application Filing
- 2006-05-17 AU AU2006314464A patent/AU2006314464B2/en active Active
- 2006-05-17 DK DK06755341.2T patent/DK1965075T3/en active
- 2006-05-17 TR TR2019/03221T patent/TR201903221T4/tr unknown
- 2006-05-17 JP JP2008541767A patent/JP2009516998A/ja active Pending
- 2006-05-17 EP EP06755341.2A patent/EP1965075B1/en active Active
- 2006-05-17 CA CA2630232A patent/CA2630232C/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP1965075B1 (en) | 2018-12-12 |
CA2630232A1 (en) | 2007-05-24 |
AU2006314464A1 (en) | 2007-05-24 |
US7939954B2 (en) | 2011-05-10 |
WO2007057480A1 (es) | 2007-05-24 |
EP1965075A4 (en) | 2017-06-07 |
EP1965075A1 (en) | 2008-09-03 |
AU2006314464B2 (en) | 2011-10-13 |
ES2296483B1 (es) | 2009-03-01 |
CA2630232C (en) | 2012-09-18 |
US20090273185A1 (en) | 2009-11-05 |
AU2006314464A8 (en) | 2009-07-02 |
ES2296483A1 (es) | 2008-04-16 |
TR201903221T4 (tr) | 2019-03-21 |
ES2704407T3 (es) | 2019-03-18 |
DK1965075T3 (en) | 2019-04-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2009516998A (ja) | 非同期型発電機のための対称および非対称故障に対する保護およびコントロールのためのシステム | |
Tohidi et al. | Analysis and enhancement of low-voltage ride-through capability of brushless doubly fed induction generator | |
Kirakosyan et al. | Fault ride through and grid support topology for the VSC-HVDC connected offshore wind farms | |
Huang et al. | Novel fault ride-through scheme and control strategy for doubly fed induction generator-based wind turbine | |
Klumpner et al. | Experimental evaluation of ride-through capabilities for a matrix converter under short power interruptions | |
Me et al. | Adaptive virtual resistance for postfault oscillation damping in grid-forming inverters | |
JP5401213B2 (ja) | 二次励磁発電装置及び二次励磁可変速発電電動装置 | |
Ambati et al. | A hierarchical control strategy with fault ride-through capability for variable frequency transformer | |
JP6022711B2 (ja) | ガスタービン発電システム | |
Huang et al. | Fault ride-through configuration and transient management scheme for self-excited induction generator-based wind turbine | |
Catuogno et al. | Fault-tolerant inverter for power flow control in variable-speed four-wire permanent-magnet generators | |
Ottersten et al. | Voltage sag response of PWM inverters for variable-speed wind turbines | |
JP7153796B2 (ja) | 二次励磁発電電動装置 | |
Jin et al. | DVR control of DFIG for compensating fault ride-through based on stationary and synchronous reference frame | |
Mohseni et al. | Low voltage ride-through of DFIG wind turbines complying with Western-Power grid code in Australia | |
JP4034458B2 (ja) | 自励式交直変換器制御装置および遮断器回路制御装置 | |
Noureldeen | A novel crowbar protection technique for DFIG wind farm during fault ride through | |
Esandi et al. | Alternative protection system for wind turbines with doubly fed induction generator | |
Beheshtaein et al. | A new adaptive virtual impedance based fault current limiter for converters | |
Dey et al. | Comparisons of PI and PR current controllers based flux weakening to limit DC-link capacitor overvoltage in PMSG based wind energy system | |
Valikhani et al. | An overview of DFIG ride through strategies under grid faults | |
Uphues et al. | DFIG's virtual resistance demagnetization for crowbar less LVRT | |
Chauhan et al. | Designing of advanced crowbar protection system for DFIG coupled wind energy conversion system at different fault conditions | |
Molinas et al. | Robust wind turbine system against voltage sag with induction generators interfaced to the grid by power electronic converters | |
Zhou et al. | Abnormal operation of wind turbine systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20090403 |
|
RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20110803 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110914 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20111013 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20111108 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20120403 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120724 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20120801 |
|
A912 | Re-examination (zenchi) completed and case transferred to appeal board |
Free format text: JAPANESE INTERMEDIATE CODE: A912 Effective date: 20121012 |